Apparatus for feeding articles to machines



Sept. 14, 1937. c. RIESEBECK 2,093,138

APPARATUS FOR FEEDING ARTICLES TO MACHINES FileEi April 8, 1933 15 Sheets-Sheet 1 p 4, 1937. c. RIESEBECK 2,093,138

APPARATUS FOR FEEDING ARTICLES TO MACHINES Filed April 8, 19153 l5 Sheets-Sheet 2 Sept. 14, 1937. c. RIESEBE CK APPARATUS FOR FEEDING ARTICLES IO MACHINES Filed April 8, 1935 15 Sheets-Sheet 3 Sept. 14, 1937. c. RIESEBECK I APPARATUS FOR FEEDING ARTICLES TO MACHINES Filed April 8, 1953 -l5 Sheets-Sheet 4 Sept. 14, 1937.

c. RIESEBECK 2,093,138

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' APPARATUS FOR FEEDING ARTICLES TO MACHINES Filed.April 8, 1933 15 Sheets-Sheet 7 Fig.40 Fig. 42

Sept. 14, 1937.

APPARATUS FOR FEEDING ARTICLES TO MACHINES Filed April 8, 1933 l5 Sheets-Sheet 8 c. RIESEBECK 2,093,138

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Sept. 14, 1937. c. RIESEBECK 2,093,138

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Sept. 14, 1937. c. RIE SEBECK- APPARATUS FOR FEEDING ARTICLES T0 MACHINES Fig.33

Sept. 14, 1937.

c. RIESEBEZCK 2,093,138

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55 Inventor-i 79 '55 71 MM ept. 14; 1937. c. RIESEBECK- 2,093,138

APPARATUS FOR FEEDING ARTICLES TO MACHINES Filed April a, 1935 15 Shets-Sheet 14 Fig39 0 v Sept. 14, l937. Y j c. RIESEBECK 3,

' APPARATUS FOR msnmg ARTICLES T0 MACHINES Filed Aprii 8, 1933 15 Sheeqs-Sheet 1s l'nve'htor:

Patented Sept. 14, [937 UNITED STATES APPARATUS FOR. FEEDING ARTICLES TO MACHINES Curt Riesebeck, Berlin-Friedenau, Germany Application April 8, 1933, Serial No. 665,621 In Germany August 29, 1929 7 Claims.

I have filed an application for patent in Germany dated August 29, 1929.

My invention relates'to apparatus for feeding articles to .machines, and more particularly to 5 apparatus for feeding closures of the crown cork type or caps of various kinds to the throat of capping machines. An object of my invention is to provide an apparatus for feeding caps, possessing a novel cap 10 feeding device and a novel magazine 'for said caps, of which the said magazine may be introduced or exchanged from the cap feeding device in a quick and hygienic manner, and having an easily exchangeable container, in which the caps piled one on top of the other are prevented through protective bodies from sticking, interlocking or deformation, while the cap feeding device is adapted to withdraw the said caps and protective bodies from the said container and,

2 separate them from one another, to convey the caps separately either to the. cap applying device or throat of the capping machine and to convey the protective bodies to a collecting vessel arranged on the machine.

A further object of my invention is to provide an apparatus for effectively and economically feeding individual articles of various kinds, from a stack.

Other objects and advantages will be made manifest in the following description and accompanying drawings.

While my invention in general is applicable to feeding articles of various kinds, it is particularly adapted to feeding caps and it is here illustrated in combination with a bottle-capping machine.

My invention will be fully explained in the following description and the particular pertinent features of construction will be stated in the drawings, which illustrate a preferable embodiment of my invention.

In the drawings Figure 1 represents a front view of a machine .claims in connection with the accompanying for attaching caps to bottles, which is constructed.in agreement with the principle of my inven-' tion and which is adapted for manual and elec- Figure 3 shows in fraction the side view of the bottle-capping machine, in which the coupling is illustrated, in the position of engagement and the operating pawl, rod and key in the operative position.

Figure 4 shows in fraction the side view of the bottle-capping machine, in which the coupling is represented in the position of engagement and the operating pawl and rod in their inoperative position and the operating key in operative position.

Figure 5 is another side view of thebottlecapping machine.

Figure 6 is a vertical section of the bottle capping machine along line 6-6 in Figure 1.

Figure 7 is atop view and horizontal section in agreement with line I-l in Figure 2.

' Figure 8 is a side view and fractional section of the lifting carriage and bottle carrying tray.

Figure 9 is a vertical section through the elastic connection rod, pertaining to the bottle raising device. 1

Figure 10 is a side view of the dismountable cap applying device.

Figure 11 is a plan view of the same.

Figure 12 is a rear view of the same, and

Figure 13 is a'longitudinal section of the same along line I3--l3 in Figure 11.

Figure 14 is a front view of the cap magazine, the closing members of which are in the closed position, and which contains the caps and protective bodies.

Figure 15 is a side view of the same.

Figure 16 is a rear view of the same.

Figure 17 is a plan view of the same.

Figure 18 is abottom view of the same, and

Figure 19 is a vertical section according to line I9I9 in Figure 14.

Figure 20 is a horizontal section according-to line 20-20 in Figure 15.

Figure21 is a plan of the protective body.

Figure 22 shows a modified form. of a protective body, surrounding a cap, in plan, and

Figure 23 is a front elevation of the same.

Figure 24 shows in plan the pattern of the closure, from which the closing member of the magazine is produced, which is arranged within the cap container of the magazine.

Figure 25 shows in plan'the pattern of the cap container from which the cap container of the magazine ismade.

Figure 26 is a side view of the holding device and the opening and closing devices-which serve for the holding, opening and closingof the cap magazine.

Figure 27 is a front view of the same.

Figure 28is a rear view of the same.

Figure 29 is a vertical section according to line 29-29 in Figure 27.

. Figure 30 is a horizontal section according to line- 30-30 in Figures 26 and 29.

Figure 31 is a front view of the turning device which is secured to' a holding plate, belonging to the opening and closing device.

Figures 32 to 34 represent a vertical section of the holding device and the opening and closing device in cooperation with the cap magazine represented in side. elevation; Figure 32 showing the closed cap magazine, Figure 33 showing the cap magazine during the opening operation, opened halfway; and Figure 34 showing the cap magazine partly opened, in section.

. Figure 35 is a plan of the cap feeding slide, carrying on its lower side a catch, serving for the removal of protective bodies from the cap magazine.

Figure 36 is a front view thereof, I

Figure 37 is a longitudinal view thereof, and

Figure 38 is a longitudinal section thereof according to line 38-38 in Figure 35.

Figure 39 is a plan of the guide, on which the cap feeding slide is reciprocated.

Figure 40 is a cross-section of the same according to line 40-40 in Figure 39.

Figure 41 is a cross-section according to line 40-40 in Figure 39 and a front view of the cap feeding slide arranged in the guide.

Figure 42 is a longitudinal section according to line 42-42 in Figure 39 and a longitudinal view of the cap feeding slide and the controlling mechanism serving for the reciprocation of said slide. a

Figurq 43 is a vertical section of the plunger serving for actuating the cap pressure ring, and Figure 44 is a horizontal section of the same in conformity with line 44-44 in Figure 43.

Figure 45 shows in' plan the pressure lever, belonging to the cap depressing device, actuating its pressure plunger.

Figure 46 is a longitudinal view thereof, and

Figure 47 is a. longitudinal section thereof according to line 41-41 in Figure 45.

The bottle-capping machine serves for applying and securing caps or sealsto bottles, milkbottles', cans and the like, it is easily portable and can be readily operated upon a table or any other suitable place and it comprises a casing and arranged upon this latter a bottle lifting device, a. removable cap'applying device, a cap feeding device and a cap depressing device, which are operated in common through a driving arrangement, possessing an electric motor for electrical operation and a removable crank for manual drive. The said caps or capsules may be such as outer caps, inner caps, crown corks, closing caps, tearing caps of aluminium and the like.

The casing of themachine The casing possesses a base plate I, upon which .side walls 8, 9. The base plate I possesses two ledges l0, Ill, the side walls 8 two ledges H and the sidewall '9 two ledges l2, l2, all serving forthe attachment of two U-shaped guards l3, l3 of sheet-metal. The main casing 3-l3 is open at the top, being closed by means of aremovable lid l5.

The bottle lifting device The bottle lifting device serves the purpose, to receive the bottle |6 to be sealed and to guide the head H of the latter into the bottle guiding channel 53 of the cap applying device 41-54, to guide it into the hollow space of the cap pressure ring I29 and thence into the initial position. The bottle lifting device contains a lifting carriage l3, having an attaching arm l9 with a boring 29 as well as a carrying bolt 2| secured to the former and being further provided with a carrying arm 22, arranged at the lower end of the lifting carriage l8, possessing a vertical boring 23 and having secured to it a bottle carrying tray 24 with attaching pin 25 and easily exchangeable by means of a releasable attaching device. This latter possesses a clamping bolt 26, displaceably arranged within a boring 21 in thecarrying arm 22 and pressed through a screw-bolt 28,-situated on the lifting carriage l8, and through a pressure lever 29 against the attaching pin 25 of the bottle carrying tray 24. The lifting carriage I8 is arranged to be displaced vertically on a carriage guide 39 provided on the front wall 3, said guiding means comprising adjustable guide-plates 32 secured by means of screws 3| and protected by a guard 201 of sheet metal. During each sealing operation the lifting carriage|8 is moved elastically up and down through a. two-armed controlling lever 33-34, mounted upon a shaft 35 arranged in the main casing 3-|3, and whose arm 33 is connected in an articulate manner with the lifting carriage I8 through an elastic connecting rod 36-43. The elastic connecting rod has a bar 38 provided with a plunger 36 and a boring 31, which bar is linked to the arm 33 and which is displaceably guided in a guiding cylinder 39 as well as in a screw-sleeve 40 mounted ing a, boring 4|, by means of which it is pivoted on the carrying bolt 2|. On the rod 381s mounted a compression spring 42, which abuts against the screw-sleeve 40 and the plunger 36, forcing the bar 38 and the plunger 36 against a felt plate 43 arranged within the guiding cylinder 39 and supporting it elastically in respect of the said guiding cylinder 39. The controlling 1ever 33-34 abuts with an idler 44 mounted on its arm 34 against a cam disc 45, seated upon the cam shaft 46 journalled in the main casing 3-|3 and which will actuate the controlling lever 33- 34 at each revolution, moving thereby the lifting carriage up and down.

The cap applying device The cap applying device 41-54 (see Figures 1, 2, 5., 6, 10-14) serves for mounting a cap 55 on the head H of the bottle l6 to be sealed and possesses a moulded piece 41, which is secured easily removably upon the flange 48 of the extension 4 of the casing by means of two pin screws 49, which are attached to the moulded piece 41 and extend through holes 50 of the flange 43, securing the moulded piece 41 to the flange 43 through screw-nuts 5|. The moulded piece 41 has a seating face 52, a verticalbottle guiding channel 53 flaring towardsits lower end, and a groove-like cap admission channel 54, opening laterally into the said bottle guiding channel 53, being freely accessible from the top and through which the cap 55 to be applied passes into the said bottle guiding channel 53, in which the cap each other.

The cap feedind device The cap feeding device supplies the cap applying device 41-54 with the caps 55 required for sealing the bottles and it has an exchangeable cap magazine, a holding device for said magazine, an opening and closing device for said magazine, a controlled cap feeding slide and a separating device.

The exchangeable cap magazine has a cap container 56-10, in which caps 55 and protective bodies 1| are stacked up alternatively one on top of the other in large numbers, which are all kept in the container 56-16f-through the magazine closure 13-14. The container 56-10 has a front wall 56, a rear wall 51, two side walls 58, 59, an attaching strip 60, a bottom consisting of two parts 6|, 62 and a recess 63 in said' bottom, which are all arranged rectangularly to Besides, the container 56-10 possesses a cap discharge opening 64 (see Figure 34) and a discharge opening 65 for the protective bodies, of which the cap discharging opening 64 is arranged below the front wall 56, permitting the caps 55 to be removed laterally from the container 56-10 individually, while the discharge opening 65 for the protective bodies is arranged below the rear wall 51, permitting said protective bodies 1| to be removed laterally from the container 56-10 individually. On the front wall 56 above the cap discharge opening 64 is provided a movable flap-like closing member 66, closing the cap discharge opening in its closing position. as shown in Figures 14 to 20, while in its open position it will not close the cap discharge opening 64, as illustrated in Figure 34. On the rear wall 51 above the discharge opening 65 for the protective bodies there is provided a movable flap-like closing member 61, which in its closing position will close the discharge opemng 65 for the protective bodies, as shown in Figures 14 to 20, while in its open position it will not close the discharge opening 65 for the protective bodies, as represented in Figure 34. The upper end of the container 56-10 is provided with a charging opening 68, through which the caps 55 and protective bodies 1| are filled into the cap container, and which is closed by means of the magazine closure 13-14, displaceably arranged in the cap container and securely locked against removal from the cap container by means of a locking member 69 arranged on the rear wall 51. Preferably the cap container is made of one piece fro a pattern 56-10 consisting of impregnated card-board, or paste-board, paper, sheet-metal and the like, and contains all parts 56-69 of the cap container as well as folding lines 10 grooved or out between these, and is manufactured and worked upon known machines like known folding box patterns. Each protective body 1| is preferablyplate-like and of rectangular form and made of impregnated cardboard, paste-board, paper, sheet-metal or the like, and placed upon each of the caps 55 stacked .up one on top of the other within the cap container 56-10. These protective bodies prevent the sticking .together. interlocking and touching of the caps 55 piled one on top of the other within the cap container and serve besides for the stiflening or reinforcement of the whole cap container "-10. Each protective body may also be of a modified form, as shown in Figures 22 and 23, in which the said protective body consists of a ring 12, made of paper, card-board,

sheet metal and the like, surrounding the cap 55 to be protected and preventing said caps from sticking together, interlocking or touching each other in the container, similar to the protective body 1|. The magazine closure 13-14 is arranged displaceably in the cap container 56- 10 and made of a pattern, consisting of impregnated card-board, paste-board, paper, sheetmetal and the like, and it possesses a bottom 13 as well as four spreading walls 14 connected therewith, which are bent upwards in respect of said bottom 13 and which resiliently abut against the walls 56-59 of the cap container as shown in Figure 19. Preferably each cap magazine is being used only once and destroyed after the consumption of the caps contained therein.

The holding device serves for holding the cap magazine 56-14, admits of an easy and quick insertion and exchange of the magazine 56-14 exchangeably arranged in-said holding device, and for the purpose of easy cleaning and inspection it is removably arranged on the main casing 8| 3 The holding device possesses the form of a container and has a front wall 15, a rear wall 16, two side walls 11, 18, a bottom 19, a recess 80 in the bottom 19, a holding space 6| for the cap magazine 56-14 and a funnel 62, having a lateral opening 83, through which funnel the said cap magazine 56-14 may be readily and quickly introduced into the holding space 8|. At the lower end of the front wall '15 is located a discharge opening 84, through which only the bottommost cap 55 (Figures 6 and 34) of the cap magazine 56-14 situated in the holding space 8| may be passed each time, and the rear wall 16 has at its lower end a discharge opening 85, through which only the bottommost protective body 1| may be passed each time from said cap magazine. For releasable attachment of the holding device to themain casing 3-l3, there are provided two holding ledges 66 on the front wall 15, by means of which the holding device is raised along a vertical holding rod 61 (Figure 6) secured to the main casing 3-l3, and held in such position. The holding device is arranged with its discharge opening 84 directly in front of the cap admission channel 54 of the cap applyi'ngdevice 41-54, permitting of the withdrawal of the lowermost cap 55 from the 'cap magazine 56-14, contained in the holding device, and to pass said cap laterally protective bodies 1| from said cap magazine may take place. In addition theopening and closing arrangement serves the purpose to turn down the closing elements 66, 61 of the cap magazine 56-14 contained in the holding device, into the closing positionv during the withdrawal of the magazine from the holding device, whereby the cap magazine is closed, while the latter may be again employed for the hygienic storage of the caps still contained therein. The opening and closing device is arranged on the holding device and contains two turning elements 89 for turning up and down the closing elements 66, 61 of the cap magazine. Each turning element 89 is attached to a holding plates 9|, removably secured to the holding device 18-88 by means of screws 88, and arranged within a chamber 82, open towards the holding space 8i provided in the holding device, and it can be removed for the purpose of cleaning or inspection through a recess 88, provided in the holding device. Each turning element 88 is made of a piece of spring metal and is resilient and possesses at its lower free end an upper ledge 84, an abutting ledge 88 and a lower ledge 88, which all extend into the holding space 8|. The mode of operation of theopening and closing device is as follows: While introducing a cap magazine 88-14 into the funnel 82 of the holding device (Figure 32) in the direction of the arrow 288 the closing elements 8'8, 81 of the cap magazine will at first reach the upper ledges 84 of the two turning elements 88, forcing them from the holding space 8i into the chambers 82 (Figinto the holding space 8 I.

ure 33), while simultaneously the closing elements 88, 81 are turned upwards, being maintained in the open position thus attained even, if thecap magazine 88-14 is further advanced While pushing the cap magazine 88-14 further into the holding space H, the turning members 88 will resiliently engage with their abutting ledges 88 the front wall 88 and the rear wall 51 of the cap magazine, securely clamping the latter in this position, so that caps 88 and protective bodies 1i may be withdrawn from the said cap magazine 88-14, as illustrated in Figures 6 and 34. When the said cap magazine is pulled out from the holding space 8I the closing elements 88, 81 reach the chambers 82 and swing into these latter and will thus engage the lower ledges 88 of the turning elements 88 from below and while the cap magazine is pulled out further from the holding space 8 I they are again turned down into the closed position.

The cap feeding slide 81 serves the purpose to withdraw the caps 88 individually from the'cap magazine 88-14 contained in the holding device 18-88, for passing the caps laterally directly into the cap admission channel 84 and the bottle guiding channel 88 and for holding the said cap 88 in the bottle guiding channel 88, until the bottle I8 to be sealed, has been introduced with itsthead I1 into said cap 88. The cap feeding slide 81 has a feeding arm 88 and four bearing bolts 88, upon which guiding rollers I88 are mounted, by means of which the cap feeding slide 81 is displaceably guided'on a guide I82 provided with two guiding rails I8I of U-shaped profile. The guide I82 has screw-holes I88 and is secured to the main casing 8-I8 by means of screws I84; it carries the holding device 18-88 and is freely accessible from the front and rear ends I88, after the cap applying device 41-84 has been removed from the casing 8-I8. For the control of the cap feeding slide 81 serves av controlling lever I88, pivotally secured to the main casing 8-I8 by means of a bearingbolt I81, which by means of a roller I88 mounted thereon, is forced by means of-a draw-spring II8 against a cam disc I88, arranged on the cam shaft 48, which spring is linked to the latter and a bearing bolt I I I, secured to the main casing 8-I8. To the lower extremity of the controlling lever I88 is linked a couplingrod II2, having a hook-shaped head I I8 and bein'g attached by means of the latter to a sleeve I I4 mounted on the cap feeding slide 81 as well as by a screw I I8 arranged upon the head I I8. As soon as the coupling rod I I2 is detached from the revoluble sleeve I I4 and turned upwards, as shown in Figure 42 in broken lines, it is possiliently engaging the feeding arm 88. The guide I82 is provided .with two stripping devices I2I, an opening I22 and a guiding member I28, which are all made of sheet metal and integral with the guide I82. Below the guide I82 is arranged the collecting vessel II8 made of sheet metal and resting upon ledges I24 of the main casing 8-I8 and adapted to be withdrawn. The mode of operation of the cap feeding slide 81 and separating device is as follows: In the initial position the cap feeding slide 81 and its feeding arm 88 If: in the cap admission channel 84 of the cap applying device 41-84. During each cap applying operation the cap feeding slide 81 as well as the catch I I1 is moved once backward in the direction of the arrow I28, and once forward in the directionof the arrow I28. 8

During the forward movement in the direction of the arrow I28 the feeding arm 88 is moved through the discharge opening 88 of the holding, device 18-88, pushing .thereby from the cap magazine 88-14 supported by the holding device 18-88 the bottommost cap 88 laterally through the discharge opening 84, laterally directly into the cap admission channel 84 and bottle guiding channel 88, and subsequently it resiliently engages the said cap 88, maintaining the latter horizontally in the bottle guiding channel, until it has been applied to a bottle I8 to be sealed. At the same time, the lowermost protective body 1I contained in said cap magazine 88-14 is clamped each time between the clamping nose I28 of the catch H1 and the feeding arm 88 during the advance of the cap feeding slide 81 and the catch II1. During the return movement of the cap feeding slide 81 and catch H1 in the direction of the arrow I28 the feeding arm 88 is removed from the cap admission channel 84, the cap magazine 88-14 and the holding device 18-88, whereby the protective body 1I clamped to the catch I I1 is carried along, stripped from the catch II1 through the stripping members I2I and dropped into the collecting vessel II8 through the opening I22. At the same time all caps 88 and protective bodies 1I contained in said cap magazine 88-14 as well as the magazine closure 18-14 will during the return movement of the cap feeding slide 81 and the catch H1 in the direction of.

the arrow I28, slide by virtue of the weight I21 placed upon the magazine closure, downwards in front of the feeding arm 88. when the removal of a fresh cap 88 and a fresh protective body 1| from the cap magazine 88-14 can again take place.

The cap pressing device the head I1 of the bottle provided with' a cap is introduced in known manner into the inner space I3I of said ring. During each'pressing operation the pressure ring I29 is being vertically depressed through a pressure plunger I32, guided within a cylindrical boring I33 provided in the extension 4 of the'casing, and actuated through av controlled pressure lever I34. To the compression plunger I32 is secured a guiding bolt I35 by means of a screw I36, and having a bearing pan I31 and upon which a guiding sleeve I38 is displaceably ,arranged, which carries on its lower end an elastic holding ring I of rubber secured by means of a pin I39 to the former, upon which is seated a metal compression cap MI. The holding ring' I40 made of soft rubber encircles ring-like a metal ball I42, leaning on 'the one hand against the lower end of the guiding sleeve I38 and carrying on the other hand the metal compression cap I, and which is supported by the holding ring I40. made of soft rubber and permitted to universally oscillate during the introduction of the head I1 of a bottle provided with a cap 55 into the inner space I3I of the pressure ring I29, said cap 55 being axially forced v against said bottle-head I1. A ring I43 threaded upon the guiding sleeve I38, having an annular rubber-buffer I44 and secured in its position through a screw I45, will limit the upward movement of the compression cap MI, and a ring I41 secured to the compression plunger I32 by means of a screw I46 and provided with an annular rubher-buffer I48, will limit the downward movement of the compression cap MI. The controlled pressure lever I34 is mounted with a boring I49 upon a shaft I50 journalled in the extension 4 of the casing, it has an opening ISI for the passage of the holding device 15-86, an adjustable screwbolt I52 with bearing pan I53 and a bearing bolt I54, upon which a swinging member I55 is arranged. The latter possesses a shaft I56, a pressure roller I51 mounted upon said shaft I56 and a screw bolt I59 linked to it by means of a pin I58,which bolt isguided with its shank I60 in a traverse I6I, which is .mounted on the pressure lever I84 by means of pins I62. On the shank I60 is arranged a compression spring I63, which engages the traverse I6I through a tension nut I64, so that the swinging member'I55 is under spring tension in respect of the pressure lever I84, while the pressure roller I51 is resiliently mounted. The pressure lever I34 by means of the pressure roller I51 will engage a curved disc I65, secured to the controlling shaft 46 and moving the pressure lever up and down at each revolution, which lever will suitably actuate the compression plunger I32 through a pressure ball I66 mounted on the bearing pans I31 and I53.

' The driving device whereby all devices of the machine are operated periodically. A gear I68'is pivoted on the cam shaft 46, said gear having a coupling rim I 69 with several. recesses I10 and engaging a pinion, III, which is secured to the driving shaft I12 carried by the main casing 8-". The driving shaft I12 is moved by means of a pulley I13 mounted thereon and by a belt I14 through the electric I motor I61, which is secured to the bed-plate I by be connected with a supply main through a cable I18 provided with a plug I11. The tension of the belt I14 is obtained through a tension roller I-19, mounted upon a lever I on the main casing 3I3, which lever is subjected to springtension through the draw-spring I8I. The coupling device possesses a hub I82 seated upon the controlling shaft 46 and having two arms I83 and I84, and a coupling pawl I86 linked to the arm I83 by means of bolts I 85. The said coupling pawl I86 is kept under spring tension through the draw-spring I81 and it is automatically engaged with its coupling tooth I88 in a recess I 10 of the gear I68 during each cap applying operation, and it is automatically withdrawn again from said recess I10 after the controlling shaft 46 has executed a total revolution.

For automatically engaging and disengaging the coupling pawl I86 serves a pawl I89, which is mounted on a bolt I90 secured to the wall 8 of the casing, and has a controlling arm I9I and is maintained in its inoperative position through a draw-spring I92, forcing it against a stop I93 provided on the wall 8 of the casing, as shown in Figures 2 and 4. At each sealing operation the pawl I89 is transferred from its inoperative position into its operative position, as shown in Figure 3, through a lever I94, pivoted on a bolt I95 secured to the wall 8 of the casing, and which lever can be depressed in the direction of the arrow I96 by a slight pressure of the finger, a bar I91 being linked to said lever, which forced with its lower stop I98 into its inoperative position .through a draw-spring I99. linked to the wall 8 of the casing andto the lever I94, from below and laterally against the controlling arm I9I of the pawl I89. When depressing the lever I94 in the direction of the arrow I96 the bar I91 will abut with its upper stop 200 against the controlling arm I9I, moving the latter downwards, whereby the pawl I89 will be shifted from the normal position shown in Fig. 2 to the engaging position shown in Fig. 3 and the pawl I86 will be movedby'the spring I81. so that its tooth I88 will engage in a recess I10 of the coupling rim I 69 of the rotating gear I68, which latter will turn the cam shaft 46 in the direction of the arrow 20I (Fig. 2). Before the cam shaft 46 has executed a total'rev'olution, the arm I84 together with the roller 202 provided thereon and mounted on said shaft will meet the upper end of the bar I91 (Fig. 4) and force the latter sideways until its upper stop 200 slips from the controlling arm I9I, whereupon the pawl I89 will be shifted automatically from the operative into its inoperative position. Shortly prior to the completion of a total revolution of the cam shaft 46 the coupling pawl I86 with its coupling tooth I88 will slide on the curved member 203 of the pawl I89, disengaging thereby the coupling pawl I86 and its coupling tooth I88 from the recess I10 of the coupling rim I69, so that the cam shaft 46 will come to a standstill after one revolution through the resistance of motion of the cam discs 45, I09, and I65. For the purpose of manipulating the machine by hand a crank 204 is provided on the driving shaft I12 fixed thereon by means of set-screw 205, and said crank is removed from the shaft I12, if it is desired to drive the apparatus by the electric motor I claim:: 1..An exchangeable container for apparatus 

